Hand-Held Power Tool

a power tool and hand-held technology, applied in the field of hand-held power tools, can solve problems such as damage or destruction of the power tool housing, and achieve the effects of reducing the size of the power tool housing, and ensuring the safety of the tool

Active Publication Date: 2012-09-20
ANDREAS STIHL AG & CO KG
View PDF17 Cites 10 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Benefits of technology

[0011]Advantageously, on the bottom of the receptacle at least one fourth rib is arranged that crosses the third ribs in a direction of the axis of rotation of the drive shaft and that has a spacing to the intermediate element. Because the fourth rib has a spacing relative to the intermediate element, the support surface of the intermediate element relative to the power tool housing is reduced. Advantageously, at least one fifth rib is provided on the bottom of the receptacle that crosses the fourth rib and is positioned at a spacing to the intermediate element. In this way, ribs extending in both directions can be spaced relative to the intermediate element.
[0012]Advantageously, the drive shaft is supported by means of a second bearing that is secured in a drive shaft housing. In order to achieve excellent cooling of the drive shaft housing and thus also of t

Problems solved by technology

A problem in this regard is the heat developed in operation t

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Hand-Held Power Tool
  • Hand-Held Power Tool
  • Hand-Held Power Tool

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0024]FIG. 1 shows as an embodiment of a hand-held power tool a hedge trimmer 1.

[0025]The configuration of the present invention can however also be used for other hand-held power tools, in particular hand-held power tools with an electrical drive motor.

[0026]The hedge trimmer 1 has a power tool housing 2, only schematically shown in FIG. 1, on which a rear handle 4 is arranged. At the end of the power tool housing 2 opposite the handle 4, a tool member projects forwardly, i.e., a cutter bar, that in the illustration of FIG. 1 is sheathed by a protective cover 5. In the area of the attachment of the cutter bar to the power tool housing 2, a bow-shaped grip 3 is secured to the power tool housing 2.

[0027]As shown the FIG. 2, the bow-shaped grip 3 is of a two-part configuration and has a first grip part 15 and a second grip part 16. The first grip part 15 is pivotably supported on the second grip part 16, is spring-loaded relative to it, and serves as a safety feature. When the two gri...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

PUM

No PUM Login to view more

Abstract

A hand-held power tool has a power tool housing made at least partially of plastic material. A drive motor is arranged in the power tool housing and a drive shaft driven connected to the drive motor is provided. A tool member is connected to the drive shaft and driven by the drive motor through the drive shaft. A first bearing rotatably supports the drive shaft relative to the power tool housing. An intermediate element supports the first bearing relative to the power tool housing. The intermediate element is arranged in a receptacle of the power tool housing and is supported on a support surface relative to the bottom of the receptacle. The support surface is less than approximately 50% of an imaginary circular ring surface defined between an outer circumference of the first bearing and the circumcircle of the receptacle.

Description

BACKGROUND OF THE INVENTION[0001]The invention relates to a hand-held power tool, such as a hedge trimmer or the like, that has a power tool housing that at least partially is comprised of plastic material. In the power tool housing, a drive motor is arranged that drives by means of a drive shaft at least one tool member of the power tool. The drive shaft is supported rotatably by means of at least one bearing relative to the power tool housing of the power tool.[0002]It is generally known that power tool housings of hand-held power tools with a drive motor, in particular an electric drive motor, are made of plastic material. The drive shaft that drives the tool member must be supported in the power tool housing of the power tool. A problem in this regard is the heat developed in operation that may cause damage or destruction of the power tool housing.[0003]DE 23 51 204 A1 discloses an electrical machine in which between the bearing and the housing a thermal insulation zone is provi...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

Application Information

Patent Timeline
no application Login to view more
IPC IPC(8): B25F5/02
CPCA01G3/053B25F5/02B25F5/008
Inventor KRATZIG, DAVIDMANG, HARALDUNTERMANN, ARNEDREXLER, STEFFEN
Owner ANDREAS STIHL AG & CO KG
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Try Eureka
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap